The dehydrogenative coupling of terminal alkynes with secondary phosphine oxides is developed. In the presence of a silver additive, palladium acetate could efficiently catalyze the dehydrocoupling of secondary phosphine oxides with a variety of terminal alkynes to produce the corresponding alkynylphosphine oxides in high yields. A reaction mechanism is proposed.
J. Yang, T. Chen, Y. Zhou, S. Yin and L. Han, Chem. Commun., 2015, 51, 3549 DOI: 10.1039/C4CC09567G
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